Re: HTC Windows 7.5 Phone, Data MMS Not working :(

windows 7.5 ie Mango is known for setting mms up with the first sim that goes in the phone

i assume that is the same for data

whilst the data APN can be changed so far no-one has managed to hack it to get mms working with giffgaff as the sims don't contain the info needed. (unless any1 knows different of course, i'm happy to learn)

Re: HTC Windows 7.5 Phone, Data MMS Not working :(

This should work (and stops you having to edit APN settings). Download the the HTC Connection Setup app from the marketplace (obviously over WIFI as you dont have data access). Run the app, select Giffgaff and save and then restart the phone. This configures everything in the phone. I have done this successfully on the Trophy, HD7 and Mozart HTC's and they all run WP7.5. As for MMS, make sure you have credit in your account as this is not free on goodybags.

If MMS still fails, I have used this message to successfully get MMS working on non HTC WP7.5 phones